Regulating valve



May 19, 1925.

E. A. ILEMAN v azeunume- VALVE Filed Dec. '2. 1922 I 2 Sheets-Sheet 2IM/ENTOR 4 I 2.4. M

I MW,

,5 M A TTORNE Vs Patented May 1925, I.

UNITED s-Tarss YORK, A conronn'r'ron or NEW YORK.

PATENT oar- ICE.

mint AUGUST ILEMAN, or QUEENS, wron Assrc'non, .BY mnsnn ASSIGNMENTS,'ro AMERICAN scmnrrnn a BUDENEBEBG CORPORATION, ornnooxmm,.1mw

nneum'rmq'f vanvn Application filed December 't'," 1922 'S eria1 No.

To all ivhom. it my concern:

Be it known that I, Emu. AUGUST Ina- MAN, a citizen of Germany, residinin Queens, Long Island, and State of ew York, have invented certain new.and use ful Improvements in Regulating Valves, of which the following isa specification; I

This invention relates to regulating valves and is articularly, althoughnot exclusively, use ul in connection with tem-' perature regulatingapparatus,- and will "be hereinafter described as-embodied in apparatusof that kind. It is to be understood, however, that the invention isalso useful in connection with pressure controlling-refrigerating, andother-kinds of apparatus; and that it is not to be regarded as limitedin its application to. controlling apparatus used for any particularpurpose. Inasmuch as the embodiment of the invention hereinafterdescribed is particularly adapted for use in a temperature regulatingsystem, it may be stated that temperature regulating valves may bedivided, generally speaking into two classes; (a) the self containedtype, in which the flow of the tempering medium is controlled by a valvewhich; is directly operated by a thermostatic element. (7)) Theauxiliarytype, in which the tempering medium is controlled by a valvewhich is actuated by some auxiliary medium, such as air, water or steampressure, the supply of which is controlled by an auxiliary controllingvalve operated by a thermostatic element. It is to this lastmentioned'type that the invention herein described is particularlyapplicable.

The general object of the present invention is to provide a new and imroved regulating valve which will be simp e and accessible inconstruction and eflicient and reliable in operation, easily adjusted soas to operate at diiferent temperatures, and highly sensitive tovariations in temperature.

The characteristic novel features of the invention will be pointed outin the appended claims.

Referring to the drawings, .Figure 1 is an elevation showing the dialportion of a regulating valve having my invention embodied therein;Figure'2 is a sectional view fied' form of the invention.

onth'e line 2-2 of Figure Figure 3 asec'tional viewon the line 3-3 10fFigure 1 a temperature res onsive element or bulb being shown attaced'to the valve mechanism and Figure 4 is a sectional vievvpsnn lar toFigure 2, showing a modi- Referring to the drawings, the various partsof the regulating valve are shown as a supported by a supporting memberor casing which may be a casting 1 the'formof which will'be apparentfrom the drawings. As shown,,the casting 1 has-an; inlet passageQand anoutlet passage 3 adapted to receive; the ends of pipes leading,respectively, to a supply of compressed air or other medium and to thevalve or other device to be actuated. Communicating" with the outletpassage 3, is vent 4, for a urpose hereinafter described, the size ofwhich may be regulated bya pointed plug 5, of the form shown, threadedin a' hole 6 in the casting 1 communicating'with the vent 4.' It will benoted that the plug 5 is axially and radially drilled so that a free,passage is provided from the vent 4 when the point ed end of the plug 5is .out of contact with the mouth of the vent 4. The effective area ofthe vent 4: can thus be very nicely regulated by screwing the plug 4 inand out, a screw driver slot being rovided in its outer end tofacilitate its a justment. The inlet opening 2 connects thru a passage 9with a cavityior chamber 10 in the back of the casting 1. The outer wallof this chamber is formed by a plate 12 secured. to the casting 1 byscrews 13, a gasket 14 being preferably interposed between the plate 12and the casting 1 so as to make a tight joint.

other side of said plate 12. Secured to I the thimblel'? is an expansionchamber 19, preferably made of two diaphragm shells as shown, one shellbeing connected with the thimble 17, and the .other shell carrying aValve stem or plunger 21, as clearly shown in the drawing. Surroundingthe expan sign chamber 19 "within the chamber 10 is..

preferably arranged a strainer 23 which serve'sto prevent dirt frompassing thru the regulating valve, along with-the compressed of anywell-known form, and as usual they and the expansion chamber 19 may bewholly or partially filled with an expansible fluid such as alcohol. Itwill also be understood that the bulb 29may be located at a distanc fromthe regulat ng valve, at the.

place the temperature of w ch is to govern the operation of theregulating valve through the expansion and contraction of the expansionchamber 19 and the consequent movement of the valve stem 21.

In the form of controlling valve shown .in Figures 2 and 3, the valvestem 21 which at its free end is pointed as shown, co-opcrates with avalve seat formed in an adjustable spindle 35 of the form shown. It-

will be noted that the spindle 35, about midway of its length, isgrooved and that this groove. communicates with ting valve seat in thespindle 35 thru a hole drilled therein. It will also be noted that thegroove in the spindle 35registers with a passage leading to the outletopening 3 in the castin 1. Longitudinal adjustment of the spindle 35 inthe casting 1 is made possible by providing the spindle with threadsnear its outer end which engage threads in a" nut 38 secured in thecastln' '1. In order to facilitate adjustment of t e spindle 35, itsouter end is provided with-a uared portion 40 adapted to receive a key,an with a pointer-41 arranged to move over a scale plate 42 secured tothe casti'ngl as shown. The pointer 41 and .the scale/plate 42 are-.covered by a crystal 44 having a hole in its center thru which the keymay be in serted, and secured to the casting l'in any suitable manner asby means of a frame 46 makin threaded engagement with the outer end o?casting 1. adapted to fit the squared-end 40, the spindle 35 maybeadjusted soas to move the valveseat therein toward or away from the endof the valve stem 21, thereby permitting the valve to be adjusted sothat it will operate at diti'erent temperatures in the place where thebulb 29 is located.

With the form of structure shown in Figures 2 and 3, the valve willclose and remain closed while the temperature at the ried thereb By theuse of a key;

place where the bulb 29 is located exceeds a certain value. In theconstruction shown in igure 4, which will now be described, the valvewill open and remain open when the temperature at the point where thebulb 29 is located exceeds a certain value.-

In the regulating valve shown in Figure 4, the various parts may be thesame as the parts hereinbefore described in connection' with the form oftheinvention shown in Figures 2 and 3, with the exception of the valvespindle 35' and the parts carand the valve stem or plunger 21'. Ascearly shown in Figure 4, the spindle 35" is bored out at one end toprovide a chamber within which is secured a valve seat 50 with whichco-oper'ates a ball valve member 51. The ball 51 is yield ingly held inengagement with the valve seat 50 byni'eans of a spring '52 arranged, asshown, around a guiding pin extending from a -plu .54 located attheinner end of the chain er within the spindle 35'. As

in the form of regulating valve shown in Figures 2 and 3, the spindle35', in the.

regulating valve of Figure 4 is provided with an annular groove whichregisters with a passage leading to the outlet opening 3 in the casting1 said groove beingconnected by a hole .thru the spindle 35 with thevalve chamberwithin the latter. As clearly shown in Figure 4, the valvestem 21 is I provided with a pointed end which is adapted to projectthru' the valve seat 50 and engage the ball 51 for the purpose oflifting; the latter from the valve seat against'the pressure exerted bythe s ring 52. It will be obvious that rotary adjustment of the s indle35' by means of a key, (as her'einbe ore described in connection withthestructures of Figures 2 and 3) will move the valve seat 50 and the ball51 towardor away from the end of the valve stem 21', thereby adjustingthe valve for 0p- -eration at difierenttemperat'ures at the place wherethe bulb 29 is located. When the temperature a the location of the bulb29 exceeds a certain value, expansion'of the volatile fluid within thebulb will cause enlargement of the expansion chamber 19 with consequentmovement of the valve stem 21' and the lifting of the ball 51 from thevalve seat 50. This will permit compressed air or other medium to passfrom the inlet opening 2 thru the passage 9, thru the screen 23 and intothe chamber 10, and thence thru the space between the valve stem 21 andthe valve seat50 and thru the latter, and then thru the 1 assag'eleading from the valve chamber to t e outlet passage 3. On the contrary,when the temperature at the place where the bulb 29 is located is belowa cer tain value, the valve stem 21 will be withdrawn from engagementwith ball 51 and the latter will engagethe valve seat 50 and willprevent passage oi the actuating 2.11m valve mechanism for regulatingmedium thru the regulating valve. the passage of a medium underpressure, a

It will be understood that the com ressed valve member, a valve seattherefor, a chamair or other medium, the'pa'ssage which. her maintainedat theinlet pressure of said the valve mechanisms herein described are Imedium, and a valve operating member 7 intended to regulate, isordinarily used to cated in said chamber and actuated by variacontrol avalve or other device to which 'tions'in pressure applied to it from anoutthe air passes thru a pipe connected to the side source, y

, outlet passage 3. With this in mind, it 3. In a valve mechanism forregulating 10 will be understood that the vent 4 serves thepassage-of'a' medium under pressure, a to release the pressure in thispipe when chamber maintained at the inlet'pressure of the re ulatingvalve is in its closed .posi-. sa id'medium,-a movable valve'member, andtion, a tho the leakage thru said .vent when a valve operating memberlocated in said the regulating valve is 0 en isfinsuflicient. chamberand subject to the pressure-therein 5 to'interfere with the bui dingupof presand actuated-by variations in pressureap-.

- sure i in the pi e' suflicient to operate the pliedto it. from anoutside source.

valve or other evioe to be controlled. This 4". In a valve mechanism.for regulating permits the maintenance offa variable prsthe passage ofamedi-um under pressure, a sure in theipip'e leading to the controlledchamber adapted to be connected to the 20 valve or other device, and theholding of source of supply of. id m di a, al

''40 use within the bulb 29 of a liquid with a outsi e source.

the jfl 1i' g P 0 wi h controlling the passage of said medium outconsequent efiiclent results. of said chamber, and a pressure responsiveIt willbe noted that, in-both 'of the valve element located in'saidchamber and t constructions hereinbefore described, the exated byvariations in pressure applied to it 25 pansion chamber 19 onits'outslde is confrom an outside source and operatively con- I tinuallysubjected to the pressure of the nected to said valve. compressed air]or other medium the pas 5. In a valve mechanism for regulating sage ofwhich the valve mechanism is inthe passage of a mediumnnder pressure, atended to regulate. This flers important valve, and means for openingand closing ,-advantages, since due to the counterpressure said valveactuated by variations in presot the compressed air or other medium.outsure applied to it from an outside source side the expansionchamber, the differential and by inlet ressure constantly applied topressure actuating on the expansion chamit by said medium. her issmaller which permitstheuse of a 6. In a valve mechanism for regulating.

35 thinner material for the diaphragm shells the passage of a mediumunder pressure, a

with correspondingly larger. movement of valve, and 'meanstforzopeningand closing the valve stem 21 or 21' per lb. of pressure said valveactuated by the resultant of 0pchange within the expansion chamber; orposed pressures constantly exerted by the the arrangement just mentionedpermits the inlet re-ssure of said'medium and from an highervapor'tension for a certain tempera- 7. In a valve mechanism forregulating ture, which means a larger pressureincrease the passage of amedium under pressure, a

per degree of temperature rise. In both\ chamber constantly maintainedat the prescases the sensitiveness of the regulating sureoif saidmedium, a valve controlling the 45 valve is materially increased.passage of said medium out of'said cham- Other. advantages offered bythe invention her, an expansion chamber located in said will be obviousfrom consideration oi the first-mentioned chamber and 'constantl subtwoembodiments thereof herein shown and jected on all sides to thepi'essureo I said described. medium, means for connecting the inside of 50 WhileI have shown certain forms in saidexpansion chamber to an outside sourcewhich my invention may be embodied, it is of variable pressure, and anoperative conto be understood that these maybe modi-v nection betweensaid expansion chamber and fied in some respects without departing from.said valve whereby the latter is controlled. the s irit of the inventionas defined in the" .8. A valve mechanism for regulatlng the 55 appendedclaims, passage of a medium under pressure in re- What I claim is: yspouse to variations in temperature at a cer- 1." In- 'a pressureactuated valve mechatain place comprising, a chamber constantly nism, a.valve member, a valve seat therefor, maintained at the pressure of sa1dmedium, actuating means connected to said, valve a valve controllmg thepassage of sa1d 9 member and responsive to pressure applied medium outof said chamber an'expansion to it from an outside source, and a casingV chamber located in said first mentioned forming both a chamber forsaid pressure chamber and constantly sub ected internally responsiveactuating means and a passage to a pressure correspondm to the aforesaidto the valve seat for the medium which sa1d temperature and external yto the supply 65 valve is intended to control. pressure of said medium.and an operative connection between said expansion chamber 'and saidvalve whereby thelatter is controlled.

. 9. A valve mechanism for regulating the passage of a medium underpressure inresporise to variations in temperature at a certain placecomprising, a body member con- 7 tainmg a chamber constantly malntainedat the pressure of said medium, a valve controlling the passage of saidmedlium out of said chamber, a plate adaptedto be secured to said bodymember and forming a wall of said chamber, an expansion chamber attachedto the inside of said plate and located in, said first mentioned chamberand constantly subjected internal] to a pressure corresponding to the aoresaid temperature and externally to the supply pressure of'saidmedium, andan operatlve con- EMIL AUGUST ILEMAN.

